Welker has passed NFL-mandated tests that have allowed him to gradually work his way back into practice with the Broncos. He was out Wednesday, limited Thursday and full Friday.

“First and foremost, we want to make sure we’ve done the right thing by the player and he’s safe to return,” Del Rio said. “Obviously, we’d like to have our better players available and he’s one of them.”

Broncos tight end Julius Thomas was limited and listed as questionable.